Origami folding bones

[YOHKOH]

Hi all

 

I'm animating a piece of paper to fold up origami style

 

I've made a plane, converted to edit poly and thensliced up into all the fold positions.

 

Then made a shape from the edit poly.

 

I have then used the skin modifier to set my shape as a bone object.

 

My problem is I need to freeze the lengths, so that the plane acts as a piece of paper. When I pull one corner the paper should start to fold.

 

Is there a quick way of doing this??

 

 

or do I need to set up a proper rig using bones and IK constraints

 

Thanks chaps.